Thanks you so much for the reply and feedback. Sorry, the game is very buggy :_), and the balance is out the door. There a lot of room for improvement on this idea and we cant add in due to limited time.
About how to out the shop. U can press the character icon (Old lady:_)) on the top right to exit the shop. ( This is a bad design choice :_((, we will improve our UI UX design)
Sorry for the confusion, thanks you again :3.